Page 218 - California Stormwater Workshop Handouts

Industrial General Permit Order

TABLE 2: Parameter NAL Values, Test Methods, and Reporting Units

PARAMETER TEST METHOD REPOR ANNUAL NAL INSTANTA
TING NEOUS
UNITS
MAXIMUM
NAL

pH* See Section pH units N/A Less than
XI.C.2 6.0 Greater
Suspended Solids (TSS)*, mg/L 100 than 9.0
Total SM 2540-D 400
Oil & Grease (O&G)*, Total mg/L 15
Zinc, Total (H) EPA 1664A mg/L 0.26** 25
EPA 200.8

Copper, Total (H) EPA 200.8 mg/L 0.0332**

Cyanide, Total SM 4500–CN C, mg/L 0.022
Lead, Total (H) D, or E mg/L 0.262**

EPA 200.8

Chemical Oxygen Demand SM 5220C mg/L 120
(COD)

Aluminum, Total EPA 200.8 mg/L 0.75

Iron, Total EPA 200.7 mg/L 1.0

Nitrate + Nitrite Nitrogen SM 4500-NO3- E mg/L as 0.68
Total Phosphorus SM 4500-P B+E N 2.0

mg/L as
P

Ammonia (as N) SM 4500-NH3 B+ mg/L 2.14
Magnesium, total 0.064
C or E

EPA 200.7 mg/L

Arsenic, Total (c) EPA 200.8 mg/L 0.15

Cadmium, Total (H) EPA 200.8 mg/L 0.0053**

Nickel, Total (H) EPA 200.8 mg/l 1.02**
Mercury, Total EPA 245.1 mg/L 0.0014

Selenium, Total EPA 200.8 mg/L 0.005
Silver, Total (H) EPA 200.8 mg/L 0.0183**
mg/L 30
Biochemical Oxygen Demand SM 5210B
(BOD)

SM – Standard Methods for the Examination of Water and Wastewater, 18th
edition
EPA – U.S. EPA test methods
(H) – Hardness dependent

* Minimum parameters required by this General Permit
**The NAL is the highest value used by U.S. EPA based on their hardness

table in the 2008 MSGP.

Order 2014-0057-DWQ 43